20511738

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{479}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 29485062

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 61, 78, 117, 122, 183, 234, 351, 366, 479, 549, 702, 793, 958, 1098, 1437, 1586, 1647, 2379, 2874, 3294, 4311, 4758, 6227, 7137, 8622, 12454, 12933, 14274, 18681, 21411, 25866, 29219, 37362, 42822, 56043, 58438, 87657, 112086, 168129, 175314, 262971, 336258, 379847, 525942, 759694, 788913, 1139541, 1577826, 2279082, 3418623, 6837246, 10255869, 20511738]

約数ペア:

[(1, 20511738), (2, 10255869), (3, 6837246), (6, 3418623), (9, 2279082), (13, 1577826), (18, 1139541), (26, 788913), (27, 759694), (39, 525942), (54, 379847), (61, 336258), (78, 262971), (117, 175314), (122, 168129), (183, 112086), (234, 87657), (351, 58438), (366, 56043), (479, 42822), (549, 37362), (702, 29219), (793, 25866), (958, 21411), (1098, 18681), (1437, 14274), (1586, 12933), (1647, 12454), (2379, 8622), (2874, 7137), (3294, 6227), (4311, 4758)]